Engine crankcase and cylinder



G. J. SHEFTZ ENGINE CRANKCASE AND CYLINDER CLEANING AND FLUSHING DEVICE Flled June 28, 1946 FIG. 3.

o c o 0 o 0 v 0 0 0 INVENTOR. cgonoe J. sues-r2,

7 BY ATTORNEYS.

\\\NN\\\\\\\\\\\\\\\\\\\\\\\\\\\\NN\\\\\N\\\\\\t Patented Dec. 6, 1949 UNITED STATES PATENT. OFFICE ENGINE CRANKCASE AND CYLINDER 1 Claim. 1

This invention relates to motor and engine flushing and cleaning devices.

An object of the invention is to provide a device whereby a solvent fluid may be sprayed into the interior of a motor vehicle engine for periodically flushing away all dirt, sludge and gummy material covering the working parts, without removing any parts of the motor itself.

Another object of the invention is to provide a device for flushing and cleaning the engine parts in the valve compartment and crankcase of a motor, comprising conduits for conducting solvent fluid into the interior of the engine and outlets therein for spraying the fluid about upon the parts to clean and flush them.

A further object of the invention is to provide an engine flushin and cleaning device which is simple in construction, inexpensive to manufacture and install, and highly effective in operation.

Other objects and advantages of the invention will become apparent from the following description of a preferred embodiment thereof as illustrated in the accompanying drawing, and in which,

Figure 1 is a fragmentary side elevation in section of a motor vehicle engine with my engine flushing device installed therein.

Figure 2 is a sectional view in plan of an engine crankcase with my flushing device installed therein, as seen on line 2-2 of Figure 1, and

Figure 3 is a fragmentary sectional view taken on line 33 of Figure 1.

As shown in Figures 1 and 2, there is a cylinder block '2 with a crankshaft 4 and cylindersas at 6, pistons 8 and connecting rods Ill, with a camshaft at I2 for lifting valves as at I4, valve springs 16 biasing the valves downward. The springs are disposed in a valve compartment or case l8 closed by a removable valve case cover plate 20. The lower portion of the engine is covered by a crank case 22 normally partly filled with lubricating oil.

To clean out the crank case and the movable parts therein and accessible therefrom, I dispose a hollow tubular flushing rack 24 in the bottom of the crank case, low enough therein as not to be in the path of any moving parts such as the crank shaft. There is an inlet pipe 28 leading through an aperture 28 in the crankcase side wall into a header pipe 30 which has a number of cross pipes 32 communicating with the interior of the pipe 30 at one end and communicating with the interior of circulating pipe 34 at their other ends. The pipes 32 have a large number of little apertures or holes 36 in and near their upper surface as illustrated, so that solvent fluid forced through inlet pipe 38, through pipe 26 and 2 into the flushing rack 24 in the crank case, will be sprayed out of the rack holes 36 onto the interior surfaces and moving and stationary parts within the crank case and engine, thoroughly flushing and cleaning them, and flushing all dirty and burnt oil down.

A vertical riser pipe 40 is connected at its lower end into inlet pipe 38 and has its upper end 42 connected into a horizontal pipe 44 the ends 46 and 48 of which are bent to form elbows extending through apertures 58 and 52 in the valve case cover plate 20 and into the valve chamber I8.

The pipes then are connected into header pipes 54 and 56 extending horizontally lengthwise of the valve chamber l8. Spray pipes 58, are closed at one end 60 and have their other ends 62 connected into the header pipes 54 or 55 as shown. The spray pipes 58, have a large number of small apertures 64 through which solvent fluid, forced in through pipes 38, 40,44, and 54 and 56, may be sprayed on the walls and all parts within the valve chamber or case I8, for thoroughly cleaning them and flushing gum and sediment ofl them.

By the use of my invention it is possible to have a clean motor inside without taking the motor apart at all, since it is only'necessary to force solvent fluid through pipe 38 for the purpose.

Although I have described a preferred embodiment of my invention in specific terms, it is to be understood that various changes may be made in size, shape, materials and arrangement without departing from the spirit and scope of the invention as claimed.

I claim:

In an engine having a crankcase and a plurality of cylinders, a device for cleaning and flushing said crankcase and cylinders comprising an inlet pipe adapted to carry cleaning fluid, a hollow tubular flushing rack disposed in the bottom of said crankcase, said flushing rack comprising a header pipe in communication with said inlet pipe, a plurality of cross-pipes arranged in spaced parallel relation with respect to each other, one end of each of said cross-pipes being in communication with said header pipe, a circulating pipe communicating with the other ends of each of said cross-pipes, there being a plurality of apertures in each of said cross-pipes for spraying cleaning fluid therethrough, and a header unit positioned adjacent said cylinders and connected to said inlet pipe, said header unit comprising a riser pipe projecting vertically from said inlet pipe and havin one end in communication with the latter, a horizontally-disposed pipe communicating with the other end of mas REFERENCES CITED The following references are oi record in the tile 0! this patent:

4 Unmm a'rs'rns mm Number Name Date Morris Apr. 20, 1920 White Sept. 7, 1920 Winchester Sept. 23. 1924 Osborne Oct. 25, 1932 Thomas Mar. 28, 1933 Bertschinger Nov. 12, 1935 Arey et al. Oct. 1, 1940 Smith July 15, 1941 Wilson Sept. 25, 1945 Games Feb. 11, 1947 

